3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #include "libavutil/avassert.h"
29 #include "libavutil/avstring.h"
30 #include "libavutil/crc.h"
31 #include "libavutil/mathematics.h"
32 #include "libavutil/pixdesc.h"
33 #include "libavutil/audioconvert.h"
34 #include "libavutil/imgutils.h"
35 #include "libavutil/samplefmt.h"
36 #include "libavutil/dict.h"
37 #include "libavutil/avassert.h"
40 #include "libavutil/opt.h"
41 #include "imgconvert.h"
43 #include "frame_thread_encoder.h"
44 #include "audioconvert.h"
46 #include "bytestream.h"
52 static int volatile entangled_thread_counter=0;
53 static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
54 static void *codec_mutex;
55 static void *avformat_mutex;
57 void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
62 min_size= FFMAX(17*min_size/16 + 32, min_size);
64 ptr= av_realloc(ptr, min_size);
65 if(!ptr) //we could set this to the unmodified min_size but this is safer if the user lost the ptr and uses NULL now
73 static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
78 min_size= FFMAX(17*min_size/16 + 32, min_size);
80 *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
81 if (!*p) min_size = 0;
86 void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
88 ff_fast_malloc(ptr, size, min_size, 0);
91 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
94 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
99 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
100 memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
103 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
106 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
111 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
112 memset(*p, 0, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
115 /* encoder management */
116 static AVCodec *first_avcodec = NULL;
118 AVCodec *av_codec_next(AVCodec *c){
119 if(c) return c->next;
120 else return first_avcodec;
123 static void avcodec_init(void)
125 static int initialized = 0;
127 if (initialized != 0)
131 ff_dsputil_static_init();
134 int av_codec_is_encoder(AVCodec *codec)
136 return codec && (codec->encode || codec->encode2);
139 int av_codec_is_decoder(AVCodec *codec)
141 return codec && codec->decode;
144 void avcodec_register(AVCodec *codec)
149 while (*p != NULL) p = &(*p)->next;
153 if (codec->init_static_data)
154 codec->init_static_data(codec);
157 unsigned avcodec_get_edge_width(void)
162 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
163 s->coded_width = width;
164 s->coded_height= height;
165 s->width = -((-width )>>s->lowres);
166 s->height= -((-height)>>s->lowres);
169 #define INTERNAL_BUFFER_SIZE (32+1)
171 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
172 int linesize_align[AV_NUM_DATA_POINTERS])
179 case PIX_FMT_YUV420P:
180 case PIX_FMT_YUYV422:
181 case PIX_FMT_UYVY422:
182 case PIX_FMT_YUV422P:
183 case PIX_FMT_YUV440P:
184 case PIX_FMT_YUV444P:
187 case PIX_FMT_GRAY16BE:
188 case PIX_FMT_GRAY16LE:
189 case PIX_FMT_YUVJ420P:
190 case PIX_FMT_YUVJ422P:
191 case PIX_FMT_YUVJ440P:
192 case PIX_FMT_YUVJ444P:
193 case PIX_FMT_YUVA420P:
194 case PIX_FMT_YUVA422P:
195 case PIX_FMT_YUVA444P:
196 case PIX_FMT_YUV420P9LE:
197 case PIX_FMT_YUV420P9BE:
198 case PIX_FMT_YUV420P10LE:
199 case PIX_FMT_YUV420P10BE:
200 case PIX_FMT_YUV420P12LE:
201 case PIX_FMT_YUV420P12BE:
202 case PIX_FMT_YUV420P14LE:
203 case PIX_FMT_YUV420P14BE:
204 case PIX_FMT_YUV422P9LE:
205 case PIX_FMT_YUV422P9BE:
206 case PIX_FMT_YUV422P10LE:
207 case PIX_FMT_YUV422P10BE:
208 case PIX_FMT_YUV422P12LE:
209 case PIX_FMT_YUV422P12BE:
210 case PIX_FMT_YUV422P14LE:
211 case PIX_FMT_YUV422P14BE:
212 case PIX_FMT_YUV444P9LE:
213 case PIX_FMT_YUV444P9BE:
214 case PIX_FMT_YUV444P10LE:
215 case PIX_FMT_YUV444P10BE:
216 case PIX_FMT_YUV444P12LE:
217 case PIX_FMT_YUV444P12BE:
218 case PIX_FMT_YUV444P14LE:
219 case PIX_FMT_YUV444P14BE:
220 case PIX_FMT_GBRP9LE:
221 case PIX_FMT_GBRP9BE:
222 case PIX_FMT_GBRP10LE:
223 case PIX_FMT_GBRP10BE:
224 case PIX_FMT_GBRP12LE:
225 case PIX_FMT_GBRP12BE:
226 case PIX_FMT_GBRP14LE:
227 case PIX_FMT_GBRP14BE:
228 w_align = 16; //FIXME assume 16 pixel per macroblock
229 h_align = 16 * 2; // interlaced needs 2 macroblocks height
231 case PIX_FMT_YUV411P:
232 case PIX_FMT_UYYVYY411:
236 case PIX_FMT_YUV410P:
237 if(s->codec_id == CODEC_ID_SVQ1){
242 if(s->codec_id == CODEC_ID_RPZA){
249 if(s->codec_id == CODEC_ID_SMC){
255 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
266 if(s->codec_id == CODEC_ID_IFF_ILBM || s->codec_id == CODEC_ID_IFF_BYTERUN1){
267 w_align= FFMAX(w_align, 8);
270 *width = FFALIGN(*width , w_align);
271 *height= FFALIGN(*height, h_align);
272 if(s->codec_id == CODEC_ID_H264 || s->lowres)
273 *height+=2; // some of the optimized chroma MC reads one line too much
274 // which is also done in mpeg decoders with lowres > 0
276 for (i = 0; i < 4; i++)
277 linesize_align[i] = STRIDE_ALIGN;
280 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
281 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
282 int linesize_align[AV_NUM_DATA_POINTERS];
284 avcodec_align_dimensions2(s, width, height, linesize_align);
285 align = FFMAX(linesize_align[0], linesize_align[3]);
286 linesize_align[1] <<= chroma_shift;
287 linesize_align[2] <<= chroma_shift;
288 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
289 *width=FFALIGN(*width, align);
292 void ff_init_buffer_info(AVCodecContext *s, AVFrame *pic)
295 pic->pkt_pts = s->pkt->pts;
296 pic->pkt_pos = s->pkt->pos;
297 pic->pkt_duration = s->pkt->duration;
299 pic->pkt_pts = AV_NOPTS_VALUE;
301 pic->pkt_duration = 0;
303 pic->reordered_opaque= s->reordered_opaque;
304 pic->sample_aspect_ratio = s->sample_aspect_ratio;
305 pic->width = s->width;
306 pic->height = s->height;
307 pic->format = s->pix_fmt;
310 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
311 enum AVSampleFormat sample_fmt, const uint8_t *buf,
312 int buf_size, int align)
314 int ch, planar, needed_size, ret = 0;
316 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
317 frame->nb_samples, sample_fmt,
319 if (buf_size < needed_size)
320 return AVERROR(EINVAL);
322 planar = av_sample_fmt_is_planar(sample_fmt);
323 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
324 if (!(frame->extended_data = av_mallocz(nb_channels *
325 sizeof(*frame->extended_data))))
326 return AVERROR(ENOMEM);
328 frame->extended_data = frame->data;
331 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
332 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
333 sample_fmt, align)) < 0) {
334 if (frame->extended_data != frame->data)
335 av_freep(&frame->extended_data);
338 if (frame->extended_data != frame->data) {
339 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
340 frame->data[ch] = frame->extended_data[ch];
346 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
348 AVCodecInternal *avci = avctx->internal;
352 buf_size = av_samples_get_buffer_size(NULL, avctx->channels,
353 frame->nb_samples, avctx->sample_fmt,
356 return AVERROR(EINVAL);
358 /* allocate InternalBuffer if needed */
360 avci->buffer = av_mallocz(sizeof(InternalBuffer));
362 return AVERROR(ENOMEM);
366 /* if there is a previously-used internal buffer, check its size and
367 channel count to see if we can reuse it */
368 if (buf->extended_data) {
369 /* if current buffer is too small, free it */
370 if (buf->extended_data[0] && buf_size > buf->audio_data_size) {
371 av_free(buf->extended_data[0]);
372 if (buf->extended_data != buf->data)
373 av_freep(&buf->extended_data);
374 buf->extended_data = NULL;
377 /* if number of channels has changed, reset and/or free extended data
378 pointers but leave data buffer in buf->data[0] for reuse */
379 if (buf->nb_channels != avctx->channels) {
380 if (buf->extended_data != buf->data)
381 av_free(buf->extended_data);
382 buf->extended_data = NULL;
386 /* if there is no previous buffer or the previous buffer cannot be used
387 as-is, allocate a new buffer and/or rearrange the channel pointers */
388 if (!buf->extended_data) {
390 if (!(buf->data[0] = av_mallocz(buf_size)))
391 return AVERROR(ENOMEM);
392 buf->audio_data_size = buf_size;
394 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
395 avctx->sample_fmt, buf->data[0],
396 buf->audio_data_size, 0)))
399 if (frame->extended_data == frame->data)
400 buf->extended_data = buf->data;
402 buf->extended_data = frame->extended_data;
403 memcpy(buf->data, frame->data, sizeof(frame->data));
404 buf->linesize[0] = frame->linesize[0];
405 buf->nb_channels = avctx->channels;
407 /* copy InternalBuffer info to the AVFrame */
408 frame->extended_data = buf->extended_data;
409 frame->linesize[0] = buf->linesize[0];
410 memcpy(frame->data, buf->data, sizeof(frame->data));
413 frame->type = FF_BUFFER_TYPE_INTERNAL;
416 frame->pkt_pts = avctx->pkt->pts;
417 frame->pkt_pos = avctx->pkt->pos;
418 frame->pkt_duration = avctx->pkt->duration;
420 frame->pkt_pts = AV_NOPTS_VALUE;
422 frame->pkt_duration = 0;
425 frame->reordered_opaque = avctx->reordered_opaque;
427 frame->sample_rate = avctx->sample_rate;
428 frame->format = avctx->sample_fmt;
429 frame->channel_layout = avctx->channel_layout;
431 if (avctx->debug & FF_DEBUG_BUFFERS)
432 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p, "
433 "internal audio buffer used\n", frame);
438 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
444 AVCodecInternal *avci = s->internal;
446 if(pic->data[0]!=NULL) {
447 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
450 if(avci->buffer_count >= INTERNAL_BUFFER_SIZE) {
451 av_log(s, AV_LOG_ERROR, "buffer_count overflow (missing release_buffer?)\n");
455 if(av_image_check_size(w, h, 0, s) || s->pix_fmt<0) {
456 av_log(s, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
461 avci->buffer = av_mallocz((INTERNAL_BUFFER_SIZE+1) *
462 sizeof(InternalBuffer));
465 buf = &avci->buffer[avci->buffer_count];
467 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
468 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
469 av_freep(&buf->base[i]);
475 int h_chroma_shift, v_chroma_shift;
480 int stride_align[AV_NUM_DATA_POINTERS];
481 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
483 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
485 avcodec_align_dimensions2(s, &w, &h, stride_align);
487 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
493 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
494 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
495 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
496 // increase alignment of w for next try (rhs gives the lowest bit set in w)
501 unaligned |= picture.linesize[i] % stride_align[i];
505 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
509 for (i=0; i<3 && picture.data[i+1]; i++)
510 size[i] = picture.data[i+1] - picture.data[i];
511 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
513 memset(buf->base, 0, sizeof(buf->base));
514 memset(buf->data, 0, sizeof(buf->data));
516 for(i=0; i<4 && size[i]; i++){
517 const int h_shift= i==0 ? 0 : h_chroma_shift;
518 const int v_shift= i==0 ? 0 : v_chroma_shift;
520 buf->linesize[i]= picture.linesize[i];
522 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
523 if(buf->base[i]==NULL)
524 return AVERROR(ENOMEM);
525 memset(buf->base[i], 128, size[i]);
527 // no edge if EDGE EMU or not planar YUV
528 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
529 buf->data[i] = buf->base[i];
531 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (pixel_size*EDGE_WIDTH>>h_shift), stride_align[i]);
533 for (; i < AV_NUM_DATA_POINTERS; i++) {
534 buf->base[i] = buf->data[i] = NULL;
535 buf->linesize[i] = 0;
537 if(size[1] && !size[2])
538 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
539 buf->width = s->width;
540 buf->height = s->height;
541 buf->pix_fmt= s->pix_fmt;
543 pic->type= FF_BUFFER_TYPE_INTERNAL;
545 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
546 pic->base[i]= buf->base[i];
547 pic->data[i]= buf->data[i];
548 pic->linesize[i]= buf->linesize[i];
550 pic->extended_data = pic->data;
551 avci->buffer_count++;
552 pic->width = buf->width;
553 pic->height = buf->height;
554 pic->format = buf->pix_fmt;
555 pic->sample_aspect_ratio = s->sample_aspect_ratio;
558 pic->pkt_pts = s->pkt->pts;
559 pic->pkt_pos = s->pkt->pos;
560 pic->pkt_duration = s->pkt->duration;
562 pic->pkt_pts = AV_NOPTS_VALUE;
564 pic->pkt_duration = 0;
566 pic->reordered_opaque= s->reordered_opaque;
567 pic->sample_aspect_ratio = s->sample_aspect_ratio;
568 pic->width = s->width;
569 pic->height = s->height;
570 pic->format = s->pix_fmt;
572 if(s->debug&FF_DEBUG_BUFFERS)
573 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d "
574 "buffers used\n", pic, avci->buffer_count);
579 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
581 switch (avctx->codec_type) {
582 case AVMEDIA_TYPE_VIDEO:
583 return video_get_buffer(avctx, frame);
584 case AVMEDIA_TYPE_AUDIO:
585 return audio_get_buffer(avctx, frame);
591 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
593 InternalBuffer *buf, *last;
594 AVCodecInternal *avci = s->internal;
596 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
598 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
599 assert(avci->buffer_count);
602 buf = NULL; /* avoids warning */
603 for (i = 0; i < avci->buffer_count; i++) { //just 3-5 checks so is not worth to optimize
604 buf = &avci->buffer[i];
605 if (buf->data[0] == pic->data[0])
608 av_assert0(i < avci->buffer_count);
609 avci->buffer_count--;
610 last = &avci->buffer[avci->buffer_count];
613 FFSWAP(InternalBuffer, *buf, *last);
616 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
618 // pic->base[i]=NULL;
620 //printf("R%X\n", pic->opaque);
622 if(s->debug&FF_DEBUG_BUFFERS)
623 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d "
624 "buffers used\n", pic, avci->buffer_count);
627 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
631 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
633 if (pic->data[0] && (pic->width != s->width || pic->height != s->height || pic->format != s->pix_fmt)) {
634 av_log(s, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
635 pic->width, pic->height, av_get_pix_fmt_name(pic->format), s->width, s->height, av_get_pix_fmt_name(s->pix_fmt));
636 s->release_buffer(s, pic);
639 ff_init_buffer_info(s, pic);
641 /* If no picture return a new buffer */
642 if(pic->data[0] == NULL) {
643 /* We will copy from buffer, so must be readable */
644 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
645 return s->get_buffer(s, pic);
648 assert(s->pix_fmt == pic->format);
650 /* If internal buffer type return the same buffer */
651 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
656 * Not internal type and reget_buffer not overridden, emulate cr buffer
659 for(i = 0; i < AV_NUM_DATA_POINTERS; i++)
660 pic->data[i] = pic->base[i] = NULL;
662 /* Allocate new frame */
663 if (s->get_buffer(s, pic))
665 /* Copy image data from old buffer to new buffer */
666 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
668 s->release_buffer(s, &temp_pic); // Release old frame
672 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
675 for(i=0; i<count; i++){
676 int r= func(c, (char*)arg + i*size);
682 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
685 for(i=0; i<count; i++){
686 int r= func(c, arg, i, 0);
692 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
693 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
698 void avcodec_get_frame_defaults(AVFrame *pic){
699 memset(pic, 0, sizeof(AVFrame));
701 pic->pts = pic->pkt_dts = pic->pkt_pts = pic->best_effort_timestamp = AV_NOPTS_VALUE;
702 pic->pkt_duration = 0;
705 pic->sample_aspect_ratio = (AVRational){0, 1};
706 pic->format = -1; /* unknown */
709 AVFrame *avcodec_alloc_frame(void){
710 AVFrame *pic= av_malloc(sizeof(AVFrame));
712 if(pic==NULL) return NULL;
714 avcodec_get_frame_defaults(pic);
719 #define MAKE_ACCESSORS(str, name, type, field) \
720 type av_##name##_get_##field(const str *s) { return s->field; } \
721 void av_##name##_set_##field(str *s, type v) { s->field = v; }
723 MAKE_ACCESSORS(AVFrame, frame, int64_t, best_effort_timestamp)
724 MAKE_ACCESSORS(AVFrame, frame, int64_t, pkt_duration)
725 MAKE_ACCESSORS(AVFrame, frame, int64_t, pkt_pos)
726 MAKE_ACCESSORS(AVFrame, frame, int64_t, channel_layout)
727 MAKE_ACCESSORS(AVFrame, frame, int, sample_rate)
728 MAKE_ACCESSORS(AVFrame, frame, AVDictionary *, metadata)
730 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
732 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
734 memset(sub, 0, sizeof(*sub));
735 sub->pts = AV_NOPTS_VALUE;
738 static int get_bit_rate(AVCodecContext *ctx)
743 switch(ctx->codec_type) {
744 case AVMEDIA_TYPE_VIDEO:
745 case AVMEDIA_TYPE_DATA:
746 case AVMEDIA_TYPE_SUBTITLE:
747 case AVMEDIA_TYPE_ATTACHMENT:
748 bit_rate = ctx->bit_rate;
750 case AVMEDIA_TYPE_AUDIO:
751 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
752 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
761 #if FF_API_AVCODEC_OPEN
762 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
764 return avcodec_open2(avctx, codec, NULL);
768 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options)
771 AVDictionary *tmp = NULL;
773 if (avcodec_is_open(avctx))
776 if ((!codec && !avctx->codec)) {
777 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
778 return AVERROR(EINVAL);
780 if ((codec && avctx->codec && codec != avctx->codec)) {
781 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
782 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
783 return AVERROR(EINVAL);
786 codec = avctx->codec;
788 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
789 return AVERROR(EINVAL);
792 av_dict_copy(&tmp, *options, 0);
794 /* If there is a user-supplied mutex locking routine, call it. */
796 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
800 entangled_thread_counter++;
801 if(entangled_thread_counter != 1){
802 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
807 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
808 if (!avctx->internal) {
809 ret = AVERROR(ENOMEM);
813 if (codec->priv_data_size > 0) {
814 if(!avctx->priv_data){
815 avctx->priv_data = av_mallocz(codec->priv_data_size);
816 if (!avctx->priv_data) {
817 ret = AVERROR(ENOMEM);
820 if (codec->priv_class) {
821 *(const AVClass**)avctx->priv_data= codec->priv_class;
822 av_opt_set_defaults(avctx->priv_data);
825 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
828 avctx->priv_data = NULL;
830 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
833 if (codec->capabilities & CODEC_CAP_EXPERIMENTAL)
834 if (avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
835 av_log(avctx, AV_LOG_ERROR, "Codec is experimental but experimental codecs are not enabled, try -strict -2\n");
840 //We only call avcodec_set_dimensions() for non h264 codecs so as not to overwrite previously setup dimensions
841 if(!( avctx->coded_width && avctx->coded_height && avctx->width && avctx->height && avctx->codec_id == CODEC_ID_H264)){
842 if(avctx->coded_width && avctx->coded_height)
843 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
844 else if(avctx->width && avctx->height)
845 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
848 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
849 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
850 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
851 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
852 avcodec_set_dimensions(avctx, 0, 0);
855 /* if the decoder init function was already called previously,
856 free the already allocated subtitle_header before overwriting it */
857 if (av_codec_is_decoder(codec))
858 av_freep(&avctx->subtitle_header);
860 #define SANE_NB_CHANNELS 128U
861 if (avctx->channels > SANE_NB_CHANNELS) {
862 ret = AVERROR(EINVAL);
866 avctx->codec = codec;
867 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
868 avctx->codec_id == CODEC_ID_NONE) {
869 avctx->codec_type = codec->type;
870 avctx->codec_id = codec->id;
872 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
873 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
874 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
875 ret = AVERROR(EINVAL);
878 avctx->frame_number = 0;
880 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
881 (!avctx->time_base.num || !avctx->time_base.den)) {
882 avctx->time_base.num = 1;
883 avctx->time_base.den = avctx->sample_rate;
887 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
889 entangled_thread_counter--; //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
890 ret = ff_frame_thread_encoder_init(avctx);
891 entangled_thread_counter++;
895 if (HAVE_THREADS && !avctx->thread_opaque
896 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
897 ret = ff_thread_init(avctx);
902 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
903 avctx->thread_count = 1;
905 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
906 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
907 avctx->codec->max_lowres);
908 ret = AVERROR(EINVAL);
912 if (av_codec_is_encoder(avctx->codec)) {
914 if (avctx->codec->sample_fmts) {
915 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
916 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
918 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
919 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
920 ret = AVERROR(EINVAL);
924 if (avctx->codec->pix_fmts) {
925 for (i = 0; avctx->codec->pix_fmts[i] != PIX_FMT_NONE; i++)
926 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
928 if (avctx->codec->pix_fmts[i] == PIX_FMT_NONE
929 && !((avctx->codec_id == CODEC_ID_MJPEG || avctx->codec_id == CODEC_ID_LJPEG)
930 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
931 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
932 ret = AVERROR(EINVAL);
936 if (avctx->codec->supported_samplerates) {
937 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
938 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
940 if (avctx->codec->supported_samplerates[i] == 0) {
941 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
942 ret = AVERROR(EINVAL);
946 if (avctx->codec->channel_layouts) {
947 if (!avctx->channel_layout) {
948 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
950 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
951 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
953 if (avctx->codec->channel_layouts[i] == 0) {
954 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
955 ret = AVERROR(EINVAL);
960 if (avctx->channel_layout && avctx->channels) {
961 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
962 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
963 ret = AVERROR(EINVAL);
966 } else if (avctx->channel_layout) {
967 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
971 avctx->pts_correction_num_faulty_pts =
972 avctx->pts_correction_num_faulty_dts = 0;
973 avctx->pts_correction_last_pts =
974 avctx->pts_correction_last_dts = INT64_MIN;
976 if(avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME) || avctx->internal->frame_thread_encoder)){
977 ret = avctx->codec->init(avctx);
985 if (av_codec_is_decoder(avctx->codec)) {
986 if (!avctx->bit_rate)
987 avctx->bit_rate = get_bit_rate(avctx);
988 /* validate channel layout from the decoder */
989 if (avctx->channel_layout &&
990 av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
991 av_log(avctx, AV_LOG_WARNING, "channel layout does not match number of channels\n");
992 avctx->channel_layout = 0;
996 entangled_thread_counter--;
998 /* Release any user-supplied mutex. */
1000 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1003 av_dict_free(options);
1010 av_freep(&avctx->priv_data);
1011 av_freep(&avctx->internal);
1016 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int size)
1018 if (size < 0 || avpkt->size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1019 av_log(avctx, AV_LOG_ERROR, "Size %d invalid\n", size);
1020 return AVERROR(EINVAL);
1024 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1025 if (!avpkt->data || avpkt->size < size) {
1026 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1027 avpkt->data = avctx->internal->byte_buffer;
1028 avpkt->size = avctx->internal->byte_buffer_size;
1029 avpkt->destruct = NULL;
1034 void *destruct = avpkt->destruct;
1036 if (avpkt->size < size) {
1037 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %d)\n", avpkt->size, size);
1038 return AVERROR(EINVAL);
1041 av_init_packet(avpkt);
1042 avpkt->destruct = destruct;
1046 int ret = av_new_packet(avpkt, size);
1048 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %d\n", size);
1053 int ff_alloc_packet(AVPacket *avpkt, int size)
1055 return ff_alloc_packet2(NULL, avpkt, size);
1059 * Pad last frame with silence.
1061 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1063 AVFrame *frame = NULL;
1064 uint8_t *buf = NULL;
1067 if (!(frame = avcodec_alloc_frame()))
1068 return AVERROR(ENOMEM);
1071 if ((ret = av_samples_get_buffer_size(&frame->linesize[0], s->channels,
1072 s->frame_size, s->sample_fmt, 0)) < 0)
1075 if (!(buf = av_malloc(ret))) {
1076 ret = AVERROR(ENOMEM);
1080 frame->nb_samples = s->frame_size;
1081 if ((ret = avcodec_fill_audio_frame(frame, s->channels, s->sample_fmt,
1084 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1085 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1087 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1088 frame->nb_samples - src->nb_samples,
1089 s->channels, s->sample_fmt)) < 0)
1097 if (frame->extended_data != frame->data)
1098 av_freep(&frame->extended_data);
1104 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1106 const AVFrame *frame,
1107 int *got_packet_ptr)
1110 AVFrame *padded_frame = NULL;
1112 AVPacket user_pkt = *avpkt;
1113 int needs_realloc = !user_pkt.data;
1115 *got_packet_ptr = 0;
1117 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1118 av_free_packet(avpkt);
1119 av_init_packet(avpkt);
1123 /* ensure that extended_data is properly set */
1124 if (frame && !frame->extended_data) {
1125 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1126 avctx->channels > AV_NUM_DATA_POINTERS) {
1127 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1128 "with more than %d channels, but extended_data is not set.\n",
1129 AV_NUM_DATA_POINTERS);
1130 return AVERROR(EINVAL);
1132 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1135 tmp.extended_data = tmp.data;
1139 /* check for valid frame size */
1141 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1142 if (frame->nb_samples > avctx->frame_size) {
1143 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1144 return AVERROR(EINVAL);
1146 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1147 if (frame->nb_samples < avctx->frame_size &&
1148 !avctx->internal->last_audio_frame) {
1149 ret = pad_last_frame(avctx, &padded_frame, frame);
1153 frame = padded_frame;
1154 avctx->internal->last_audio_frame = 1;
1157 if (frame->nb_samples != avctx->frame_size) {
1158 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1159 return AVERROR(EINVAL);
1164 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1166 if (*got_packet_ptr) {
1167 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1168 if (avpkt->pts == AV_NOPTS_VALUE)
1169 avpkt->pts = frame->pts;
1170 if (!avpkt->duration)
1171 avpkt->duration = ff_samples_to_time_base(avctx,
1174 avpkt->dts = avpkt->pts;
1179 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1181 if (user_pkt.data) {
1182 if (user_pkt.size >= avpkt->size) {
1183 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1185 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1186 avpkt->size = user_pkt.size;
1189 avpkt->data = user_pkt.data;
1190 avpkt->destruct = user_pkt.destruct;
1192 if (av_dup_packet(avpkt) < 0) {
1193 ret = AVERROR(ENOMEM);
1199 if (needs_realloc && avpkt->data) {
1200 uint8_t *new_data = av_realloc(avpkt->data, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1202 avpkt->data = new_data;
1205 avctx->frame_number++;
1208 if (ret < 0 || !*got_packet_ptr) {
1209 av_free_packet(avpkt);
1210 av_init_packet(avpkt);
1214 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1215 this needs to be moved to the encoders, but for now we can do it
1216 here to simplify things */
1217 avpkt->flags |= AV_PKT_FLAG_KEY;
1220 av_freep(&padded_frame->data[0]);
1221 if (padded_frame->extended_data != padded_frame->data)
1222 av_freep(&padded_frame->extended_data);
1223 av_freep(&padded_frame);
1229 #if FF_API_OLD_DECODE_AUDIO
1230 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1231 uint8_t *buf, int buf_size,
1232 const short *samples)
1237 int ret, samples_size, got_packet;
1239 av_init_packet(&pkt);
1241 pkt.size = buf_size;
1245 avcodec_get_frame_defaults(frame);
1247 if (avctx->frame_size) {
1248 frame->nb_samples = avctx->frame_size;
1250 /* if frame_size is not set, the number of samples must be
1251 calculated from the buffer size */
1253 if (!av_get_bits_per_sample(avctx->codec_id)) {
1254 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1255 "support this codec\n");
1256 return AVERROR(EINVAL);
1258 nb_samples = (int64_t)buf_size * 8 /
1259 (av_get_bits_per_sample(avctx->codec_id) *
1261 if (nb_samples >= INT_MAX)
1262 return AVERROR(EINVAL);
1263 frame->nb_samples = nb_samples;
1266 /* it is assumed that the samples buffer is large enough based on the
1267 relevant parameters */
1268 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1270 avctx->sample_fmt, 1);
1271 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1273 (const uint8_t *) samples,
1277 /* fabricate frame pts from sample count.
1278 this is needed because the avcodec_encode_audio() API does not have
1279 a way for the user to provide pts */
1280 if(avctx->sample_rate && avctx->time_base.num)
1281 frame->pts = ff_samples_to_time_base(avctx,
1282 avctx->internal->sample_count);
1284 frame->pts = AV_NOPTS_VALUE;
1285 avctx->internal->sample_count += frame->nb_samples;
1291 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1292 if (!ret && got_packet && avctx->coded_frame) {
1293 avctx->coded_frame->pts = pkt.pts;
1294 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1296 /* free any side data since we cannot return it */
1297 ff_packet_free_side_data(&pkt);
1299 if (frame && frame->extended_data != frame->data)
1300 av_freep(&frame->extended_data);
1302 return ret ? ret : pkt.size;
1306 #if FF_API_OLD_ENCODE_VIDEO
1307 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1308 const AVFrame *pict)
1311 int ret, got_packet = 0;
1313 if(buf_size < FF_MIN_BUFFER_SIZE){
1314 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1318 av_init_packet(&pkt);
1320 pkt.size = buf_size;
1322 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1323 if (!ret && got_packet && avctx->coded_frame) {
1324 avctx->coded_frame->pts = pkt.pts;
1325 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1328 /* free any side data since we cannot return it */
1329 if (pkt.side_data_elems > 0) {
1331 for (i = 0; i < pkt.side_data_elems; i++)
1332 av_free(pkt.side_data[i].data);
1333 av_freep(&pkt.side_data);
1334 pkt.side_data_elems = 0;
1337 return ret ? ret : pkt.size;
1341 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1343 const AVFrame *frame,
1344 int *got_packet_ptr)
1347 AVPacket user_pkt = *avpkt;
1348 int needs_realloc = !user_pkt.data;
1350 *got_packet_ptr = 0;
1352 if(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
1353 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1355 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1356 av_free_packet(avpkt);
1357 av_init_packet(avpkt);
1362 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1363 return AVERROR(EINVAL);
1365 av_assert0(avctx->codec->encode2);
1367 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1368 av_assert0(ret <= 0);
1370 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1372 if (user_pkt.data) {
1373 if (user_pkt.size >= avpkt->size) {
1374 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1376 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1377 avpkt->size = user_pkt.size;
1380 avpkt->data = user_pkt.data;
1381 avpkt->destruct = user_pkt.destruct;
1383 if (av_dup_packet(avpkt) < 0) {
1384 ret = AVERROR(ENOMEM);
1390 if (!*got_packet_ptr)
1392 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1393 avpkt->pts = avpkt->dts = frame->pts;
1395 if (needs_realloc && avpkt->data &&
1396 avpkt->destruct == av_destruct_packet) {
1397 uint8_t *new_data = av_realloc(avpkt->data, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1399 avpkt->data = new_data;
1402 avctx->frame_number++;
1405 if (ret < 0 || !*got_packet_ptr)
1406 av_free_packet(avpkt);
1412 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1413 const AVSubtitle *sub)
1416 if(sub->start_display_time) {
1417 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1421 ret = avctx->codec->encode(avctx, buf, buf_size, (void *)(intptr_t)sub);
1422 avctx->frame_number++;
1427 * Attempt to guess proper monotonic timestamps for decoded video frames
1428 * which might have incorrect times. Input timestamps may wrap around, in
1429 * which case the output will as well.
1431 * @param pts the pts field of the decoded AVPacket, as passed through
1433 * @param dts the dts field of the decoded AVPacket
1434 * @return one of the input values, may be AV_NOPTS_VALUE
1436 static int64_t guess_correct_pts(AVCodecContext *ctx,
1437 int64_t reordered_pts, int64_t dts)
1439 int64_t pts = AV_NOPTS_VALUE;
1441 if (dts != AV_NOPTS_VALUE) {
1442 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
1443 ctx->pts_correction_last_dts = dts;
1445 if (reordered_pts != AV_NOPTS_VALUE) {
1446 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
1447 ctx->pts_correction_last_pts = reordered_pts;
1449 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
1450 && reordered_pts != AV_NOPTS_VALUE)
1451 pts = reordered_pts;
1458 static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1461 const uint8_t *data;
1464 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE))
1467 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1468 if (!data || size < 4)
1470 flags = bytestream_get_le32(&data);
1472 if (size < 4) /* Required for any of the changes */
1474 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1475 avctx->channels = bytestream_get_le32(&data);
1478 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1481 avctx->channel_layout = bytestream_get_le64(&data);
1486 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1487 avctx->sample_rate = bytestream_get_le32(&data);
1490 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1493 avctx->width = bytestream_get_le32(&data);
1494 avctx->height = bytestream_get_le32(&data);
1495 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1500 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1501 int *got_picture_ptr,
1502 const AVPacket *avpkt)
1505 // copy to ensure we do not change avpkt
1506 AVPacket tmp = *avpkt;
1508 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
1509 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
1510 return AVERROR(EINVAL);
1513 *got_picture_ptr= 0;
1514 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1515 return AVERROR(EINVAL);
1517 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
1518 int did_split = av_packet_split_side_data(&tmp);
1519 apply_param_change(avctx, &tmp);
1521 if (HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1522 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1525 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1527 picture->pkt_dts= avpkt->dts;
1529 if(!avctx->has_b_frames){
1530 picture->pkt_pos= avpkt->pos;
1532 //FIXME these should be under if(!avctx->has_b_frames)
1533 if (!picture->sample_aspect_ratio.num)
1534 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1535 if (!picture->width)
1536 picture->width = avctx->width;
1537 if (!picture->height)
1538 picture->height = avctx->height;
1539 if (picture->format == PIX_FMT_NONE)
1540 picture->format = avctx->pix_fmt;
1543 emms_c(); //needed to avoid an emms_c() call before every return;
1547 ff_packet_free_side_data(&tmp);
1552 if (*got_picture_ptr){
1553 avctx->frame_number++;
1554 picture->best_effort_timestamp = guess_correct_pts(avctx,
1564 #if FF_API_OLD_DECODE_AUDIO
1565 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
1566 int *frame_size_ptr,
1570 int ret, got_frame = 0;
1572 if (avctx->get_buffer != avcodec_default_get_buffer) {
1573 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
1574 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
1575 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
1576 "avcodec_decode_audio4()\n");
1577 avctx->get_buffer = avcodec_default_get_buffer;
1578 avctx->release_buffer = avcodec_default_release_buffer;
1581 ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt);
1583 if (ret >= 0 && got_frame) {
1585 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
1586 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
1588 avctx->sample_fmt, 1);
1589 if (*frame_size_ptr < data_size) {
1590 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
1591 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
1592 return AVERROR(EINVAL);
1595 memcpy(samples, frame.extended_data[0], plane_size);
1597 if (planar && avctx->channels > 1) {
1598 uint8_t *out = ((uint8_t *)samples) + plane_size;
1599 for (ch = 1; ch < avctx->channels; ch++) {
1600 memcpy(out, frame.extended_data[ch], plane_size);
1604 *frame_size_ptr = data_size;
1606 *frame_size_ptr = 0;
1612 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1615 const AVPacket *avpkt)
1621 if (!avpkt->data && avpkt->size) {
1622 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1623 return AVERROR(EINVAL);
1625 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
1626 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
1627 return AVERROR(EINVAL);
1630 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1633 // copy to ensure we do not change avpkt
1634 AVPacket tmp = *avpkt;
1635 int did_split = av_packet_split_side_data(&tmp);
1636 apply_param_change(avctx, &tmp);
1639 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
1640 if (ret >= 0 && *got_frame_ptr) {
1641 avctx->frame_number++;
1642 frame->pkt_dts = avpkt->dts;
1643 if (frame->format == AV_SAMPLE_FMT_NONE)
1644 frame->format = avctx->sample_fmt;
1645 if (!frame->channel_layout)
1646 frame->channel_layout = avctx->channel_layout;
1647 if (!frame->sample_rate)
1648 frame->sample_rate = avctx->sample_rate;
1651 side= av_packet_get_side_data(avctx->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
1652 if(side && side_size>=10) {
1653 avctx->internal->skip_samples = AV_RL32(side);
1655 if (avctx->internal->skip_samples) {
1656 if(frame->nb_samples <= avctx->internal->skip_samples){
1658 avctx->internal->skip_samples -= frame->nb_samples;
1660 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
1661 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
1662 if(avctx->pkt_timebase.num && avctx->sample_rate) {
1663 if(frame->pkt_pts!=AV_NOPTS_VALUE)
1664 frame->pkt_pts += av_rescale_q(avctx->internal->skip_samples,(AVRational){1, avctx->sample_rate}, avctx->pkt_timebase);
1665 if(frame->pkt_dts!=AV_NOPTS_VALUE)
1666 frame->pkt_dts += av_rescale_q(avctx->internal->skip_samples,(AVRational){1, avctx->sample_rate}, avctx->pkt_timebase);
1668 frame->nb_samples -= avctx->internal->skip_samples;
1669 avctx->internal->skip_samples = 0;
1675 ff_packet_free_side_data(&tmp);
1683 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1689 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
1690 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
1691 return AVERROR(EINVAL);
1696 avcodec_get_subtitle_defaults(sub);
1697 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1699 avctx->frame_number++;
1703 void avsubtitle_free(AVSubtitle *sub)
1707 for (i = 0; i < sub->num_rects; i++)
1709 av_freep(&sub->rects[i]->pict.data[0]);
1710 av_freep(&sub->rects[i]->pict.data[1]);
1711 av_freep(&sub->rects[i]->pict.data[2]);
1712 av_freep(&sub->rects[i]->pict.data[3]);
1713 av_freep(&sub->rects[i]->text);
1714 av_freep(&sub->rects[i]->ass);
1715 av_freep(&sub->rects[i]);
1718 av_freep(&sub->rects);
1720 memset(sub, 0, sizeof(AVSubtitle));
1723 av_cold int avcodec_close(AVCodecContext *avctx)
1725 /* If there is a user-supplied mutex locking routine, call it. */
1726 if (ff_lockmgr_cb) {
1727 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1731 entangled_thread_counter++;
1732 if(entangled_thread_counter != 1){
1733 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1734 entangled_thread_counter--;
1738 if (avcodec_is_open(avctx)) {
1739 if (avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
1740 entangled_thread_counter --;
1741 ff_frame_thread_encoder_free(avctx);
1742 entangled_thread_counter ++;
1744 if (HAVE_THREADS && avctx->thread_opaque)
1745 ff_thread_free(avctx);
1746 if (avctx->codec && avctx->codec->close)
1747 avctx->codec->close(avctx);
1748 avcodec_default_free_buffers(avctx);
1749 avctx->coded_frame = NULL;
1750 avctx->internal->byte_buffer_size = 0;
1751 av_freep(&avctx->internal->byte_buffer);
1752 av_freep(&avctx->internal);
1755 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1756 av_opt_free(avctx->priv_data);
1758 av_freep(&avctx->priv_data);
1759 if (av_codec_is_encoder(avctx->codec))
1760 av_freep(&avctx->extradata);
1761 avctx->codec = NULL;
1762 avctx->active_thread_type = 0;
1763 entangled_thread_counter--;
1765 /* Release any user-supplied mutex. */
1766 if (ff_lockmgr_cb) {
1767 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1772 static enum CodecID remap_deprecated_codec_id(enum CodecID id)
1775 //This is for future deprecatec codec ids, its empty since
1776 //last major bump but will fill up again over time, please don't remove it
1777 // case CODEC_ID_UTVIDEO_DEPRECATED: return CODEC_ID_UTVIDEO;
1778 default : return id;
1782 AVCodec *avcodec_find_encoder(enum CodecID id)
1784 AVCodec *p, *experimental=NULL;
1786 id= remap_deprecated_codec_id(id);
1788 if (av_codec_is_encoder(p) && p->id == id) {
1789 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1796 return experimental;
1799 AVCodec *avcodec_find_encoder_by_name(const char *name)
1806 if (av_codec_is_encoder(p) && strcmp(name,p->name) == 0)
1813 AVCodec *avcodec_find_decoder(enum CodecID id)
1815 AVCodec *p, *experimental=NULL;
1817 id= remap_deprecated_codec_id(id);
1819 if (av_codec_is_decoder(p) && p->id == id) {
1820 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1827 return experimental;
1830 AVCodec *avcodec_find_decoder_by_name(const char *name)
1837 if (av_codec_is_decoder(p) && strcmp(name,p->name) == 0)
1844 const char *avcodec_get_name(enum CodecID id)
1850 #include "libavcodec/codec_names.h"
1852 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
1854 codec = avcodec_find_decoder(id);
1857 codec = avcodec_find_encoder(id);
1860 return "unknown_codec";
1863 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1865 int i, len, ret = 0;
1867 #define IS_PRINT(x) \
1868 (((x) >= '0' && (x) <= '9') || \
1869 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
1870 ((x) == '.' || (x) == ' ' || (x) == '-'))
1872 for (i = 0; i < 4; i++) {
1873 len = snprintf(buf, buf_size,
1874 IS_PRINT(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
1876 buf_size = buf_size > len ? buf_size - len : 0;
1883 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1885 const char *codec_type;
1886 const char *codec_name;
1887 const char *profile = NULL;
1890 AVRational display_aspect_ratio;
1892 if (!buf || buf_size <= 0)
1894 codec_type = av_get_media_type_string(enc->codec_type);
1895 codec_name = avcodec_get_name(enc->codec_id);
1896 if (enc->profile != FF_PROFILE_UNKNOWN) {
1900 p = encode ? avcodec_find_encoder(enc->codec_id) :
1901 avcodec_find_decoder(enc->codec_id);
1903 profile = av_get_profile_name(p, enc->profile);
1906 snprintf(buf, buf_size, "%s: %s%s", codec_type ? codec_type : "unknown",
1907 codec_name, enc->mb_decision ? " (hq)" : "");
1908 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
1910 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
1911 if (enc->codec_tag) {
1913 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1914 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1915 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
1917 switch(enc->codec_type) {
1918 case AVMEDIA_TYPE_VIDEO:
1919 if (enc->pix_fmt != PIX_FMT_NONE) {
1920 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1922 av_get_pix_fmt_name(enc->pix_fmt));
1925 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1927 enc->width, enc->height);
1928 if (enc->sample_aspect_ratio.num) {
1929 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1930 enc->width*enc->sample_aspect_ratio.num,
1931 enc->height*enc->sample_aspect_ratio.den,
1933 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1934 " [SAR %d:%d DAR %d:%d]",
1935 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1936 display_aspect_ratio.num, display_aspect_ratio.den);
1938 if(av_log_get_level() >= AV_LOG_DEBUG){
1939 int g= av_gcd(enc->time_base.num, enc->time_base.den);
1940 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1942 enc->time_base.num/g, enc->time_base.den/g);
1946 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1947 ", q=%d-%d", enc->qmin, enc->qmax);
1950 case AVMEDIA_TYPE_AUDIO:
1951 if (enc->sample_rate) {
1952 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1953 ", %d Hz", enc->sample_rate);
1955 av_strlcat(buf, ", ", buf_size);
1956 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1957 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1958 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1959 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1966 if (enc->flags & CODEC_FLAG_PASS1)
1967 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1969 if (enc->flags & CODEC_FLAG_PASS2)
1970 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1973 bitrate = get_bit_rate(enc);
1975 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1976 ", %d kb/s", bitrate / 1000);
1980 const char *av_get_profile_name(const AVCodec *codec, int profile)
1983 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1986 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1987 if (p->profile == profile)
1993 unsigned avcodec_version( void )
1995 // av_assert0(CODEC_ID_V410==164);
1996 av_assert0(CODEC_ID_PCM_S8_PLANAR==65563);
1997 av_assert0(CODEC_ID_ADPCM_G722==69660);
1998 // av_assert0(CODEC_ID_BMV_AUDIO==86071);
1999 av_assert0(CODEC_ID_SRT==94216);
2000 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
2002 return LIBAVCODEC_VERSION_INT;
2005 const char *avcodec_configuration(void)
2007 return FFMPEG_CONFIGURATION;
2010 const char *avcodec_license(void)
2012 #define LICENSE_PREFIX "libavcodec license: "
2013 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
2016 void avcodec_flush_buffers(AVCodecContext *avctx)
2018 if(HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
2019 ff_thread_flush(avctx);
2020 else if(avctx->codec->flush)
2021 avctx->codec->flush(avctx);
2023 avctx->pts_correction_last_pts =
2024 avctx->pts_correction_last_dts = INT64_MIN;
2027 static void video_free_buffers(AVCodecContext *s)
2029 AVCodecInternal *avci = s->internal;
2035 if (avci->buffer_count)
2036 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n",
2037 avci->buffer_count);
2038 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
2039 InternalBuffer *buf = &avci->buffer[i];
2041 av_freep(&buf->base[j]);
2045 av_freep(&avci->buffer);
2047 avci->buffer_count=0;
2050 static void audio_free_buffers(AVCodecContext *avctx)
2052 AVCodecInternal *avci = avctx->internal;
2053 InternalBuffer *buf;
2059 if (buf->extended_data) {
2060 av_free(buf->extended_data[0]);
2061 if (buf->extended_data != buf->data)
2062 av_freep(&buf->extended_data);
2064 av_freep(&avci->buffer);
2067 void avcodec_default_free_buffers(AVCodecContext *avctx)
2069 switch (avctx->codec_type) {
2070 case AVMEDIA_TYPE_VIDEO:
2071 video_free_buffers(avctx);
2073 case AVMEDIA_TYPE_AUDIO:
2074 audio_free_buffers(avctx);
2081 int av_get_exact_bits_per_sample(enum CodecID codec_id)
2084 case CODEC_ID_ADPCM_CT:
2085 case CODEC_ID_ADPCM_IMA_APC:
2086 case CODEC_ID_ADPCM_IMA_EA_SEAD:
2087 case CODEC_ID_ADPCM_IMA_WS:
2088 case CODEC_ID_ADPCM_G722:
2089 case CODEC_ID_ADPCM_YAMAHA:
2091 case CODEC_ID_PCM_ALAW:
2092 case CODEC_ID_PCM_MULAW:
2093 case CODEC_ID_PCM_S8:
2094 case CODEC_ID_PCM_U8:
2095 case CODEC_ID_PCM_ZORK:
2097 case CODEC_ID_PCM_S16BE:
2098 case CODEC_ID_PCM_S16LE:
2099 case CODEC_ID_PCM_S16LE_PLANAR:
2100 case CODEC_ID_PCM_U16BE:
2101 case CODEC_ID_PCM_U16LE:
2103 case CODEC_ID_PCM_S24DAUD:
2104 case CODEC_ID_PCM_S24BE:
2105 case CODEC_ID_PCM_S24LE:
2106 case CODEC_ID_PCM_U24BE:
2107 case CODEC_ID_PCM_U24LE:
2109 case CODEC_ID_PCM_S32BE:
2110 case CODEC_ID_PCM_S32LE:
2111 case CODEC_ID_PCM_U32BE:
2112 case CODEC_ID_PCM_U32LE:
2113 case CODEC_ID_PCM_F32BE:
2114 case CODEC_ID_PCM_F32LE:
2116 case CODEC_ID_PCM_F64BE:
2117 case CODEC_ID_PCM_F64LE:
2124 enum CodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
2126 static const enum CodecID map[AV_SAMPLE_FMT_NB][2] = {
2127 [AV_SAMPLE_FMT_U8 ] = { CODEC_ID_PCM_U8, CODEC_ID_PCM_U8 },
2128 [AV_SAMPLE_FMT_S16 ] = { CODEC_ID_PCM_S16LE, CODEC_ID_PCM_S16BE },
2129 [AV_SAMPLE_FMT_S32 ] = { CODEC_ID_PCM_S32LE, CODEC_ID_PCM_S32BE },
2130 [AV_SAMPLE_FMT_FLT ] = { CODEC_ID_PCM_F32LE, CODEC_ID_PCM_F32BE },
2131 [AV_SAMPLE_FMT_DBL ] = { CODEC_ID_PCM_F64LE, CODEC_ID_PCM_F64BE },
2132 [AV_SAMPLE_FMT_U8P ] = { CODEC_ID_PCM_U8, CODEC_ID_PCM_U8 },
2133 [AV_SAMPLE_FMT_S16P] = { CODEC_ID_PCM_S16LE, CODEC_ID_PCM_S16BE },
2134 [AV_SAMPLE_FMT_S32P] = { CODEC_ID_PCM_S32LE, CODEC_ID_PCM_S32BE },
2135 [AV_SAMPLE_FMT_FLTP] = { CODEC_ID_PCM_F32LE, CODEC_ID_PCM_F32BE },
2136 [AV_SAMPLE_FMT_DBLP] = { CODEC_ID_PCM_F64LE, CODEC_ID_PCM_F64BE },
2138 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
2139 return CODEC_ID_NONE;
2140 if (be < 0 || be > 1)
2142 return map[fmt][be];
2145 int av_get_bits_per_sample(enum CodecID codec_id)
2148 case CODEC_ID_ADPCM_SBPRO_2:
2150 case CODEC_ID_ADPCM_SBPRO_3:
2152 case CODEC_ID_ADPCM_SBPRO_4:
2153 case CODEC_ID_ADPCM_IMA_WAV:
2154 case CODEC_ID_ADPCM_IMA_QT:
2155 case CODEC_ID_ADPCM_SWF:
2156 case CODEC_ID_ADPCM_MS:
2159 return av_get_exact_bits_per_sample(codec_id);
2163 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
2165 int id, sr, ch, ba, tag, bps;
2167 id = avctx->codec_id;
2168 sr = avctx->sample_rate;
2169 ch = avctx->channels;
2170 ba = avctx->block_align;
2171 tag = avctx->codec_tag;
2172 bps = av_get_exact_bits_per_sample(avctx->codec_id);
2174 /* codecs with an exact constant bits per sample */
2175 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
2176 return (frame_bytes * 8LL) / (bps * ch);
2177 bps = avctx->bits_per_coded_sample;
2179 /* codecs with a fixed packet duration */
2181 case CODEC_ID_ADPCM_ADX: return 32;
2182 case CODEC_ID_ADPCM_IMA_QT: return 64;
2183 case CODEC_ID_ADPCM_EA_XAS: return 128;
2184 case CODEC_ID_AMR_NB:
2186 case CODEC_ID_QCELP:
2187 case CODEC_ID_RA_144:
2188 case CODEC_ID_RA_288: return 160;
2189 case CODEC_ID_IMC: return 256;
2190 case CODEC_ID_AMR_WB:
2191 case CODEC_ID_GSM_MS: return 320;
2192 case CODEC_ID_MP1: return 384;
2193 case CODEC_ID_ATRAC1: return 512;
2194 case CODEC_ID_ATRAC3: return 1024;
2196 case CODEC_ID_MUSEPACK7: return 1152;
2197 case CODEC_ID_AC3: return 1536;
2201 /* calc from sample rate */
2202 if (id == CODEC_ID_TTA)
2203 return 256 * sr / 245;
2206 /* calc from sample rate and channels */
2207 if (id == CODEC_ID_BINKAUDIO_DCT)
2208 return (480 << (sr / 22050)) / ch;
2213 /* calc from block_align */
2214 if (id == CODEC_ID_SIPR) {
2216 case 20: return 160;
2217 case 19: return 144;
2218 case 29: return 288;
2219 case 37: return 480;
2221 } else if (id == CODEC_ID_ILBC) {
2223 case 38: return 160;
2224 case 50: return 240;
2229 if (frame_bytes > 0) {
2230 /* calc from frame_bytes only */
2231 if (id == CODEC_ID_TRUESPEECH)
2232 return 240 * (frame_bytes / 32);
2233 if (id == CODEC_ID_NELLYMOSER)
2234 return 256 * (frame_bytes / 64);
2237 /* calc from frame_bytes and bits_per_coded_sample */
2238 if (id == CODEC_ID_ADPCM_G726)
2239 return frame_bytes * 8 / bps;
2243 /* calc from frame_bytes and channels */
2245 case CODEC_ID_ADPCM_4XM:
2246 case CODEC_ID_ADPCM_IMA_ISS:
2247 return (frame_bytes - 4 * ch) * 2 / ch;
2248 case CODEC_ID_ADPCM_IMA_SMJPEG:
2249 return (frame_bytes - 4) * 2 / ch;
2250 case CODEC_ID_ADPCM_IMA_AMV:
2251 return (frame_bytes - 8) * 2 / ch;
2252 case CODEC_ID_ADPCM_XA:
2253 return (frame_bytes / 128) * 224 / ch;
2254 case CODEC_ID_INTERPLAY_DPCM:
2255 return (frame_bytes - 6 - ch) / ch;
2256 case CODEC_ID_ROQ_DPCM:
2257 return (frame_bytes - 8) / ch;
2258 case CODEC_ID_XAN_DPCM:
2259 return (frame_bytes - 2 * ch) / ch;
2260 case CODEC_ID_MACE3:
2261 return 3 * frame_bytes / ch;
2262 case CODEC_ID_MACE6:
2263 return 6 * frame_bytes / ch;
2264 case CODEC_ID_PCM_LXF:
2265 return 2 * (frame_bytes / (5 * ch));
2269 /* calc from frame_bytes, channels, and codec_tag */
2270 if (id == CODEC_ID_SOL_DPCM) {
2272 return frame_bytes / ch;
2274 return frame_bytes * 2 / ch;
2279 /* calc from frame_bytes, channels, and block_align */
2280 int blocks = frame_bytes / ba;
2281 switch (avctx->codec_id) {
2282 case CODEC_ID_ADPCM_IMA_WAV:
2283 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2284 case CODEC_ID_ADPCM_IMA_DK3:
2285 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2286 case CODEC_ID_ADPCM_IMA_DK4:
2287 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2288 case CODEC_ID_ADPCM_MS:
2289 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2294 /* calc from frame_bytes, channels, and bits_per_coded_sample */
2295 switch (avctx->codec_id) {
2296 case CODEC_ID_PCM_DVD:
2299 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2300 case CODEC_ID_PCM_BLURAY:
2303 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2304 case CODEC_ID_S302M:
2305 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2315 int ff_thread_init(AVCodecContext *s){
2320 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2334 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
2336 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
2340 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2342 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
2343 "version to the newest one from Git. If the problem still "
2344 "occurs, it means that your file has a feature which has not "
2345 "been implemented.\n", feature);
2347 av_log_ask_for_sample(avc, NULL);
2350 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2352 va_list argument_list;
2354 va_start(argument_list, msg);
2357 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2358 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2359 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
2360 "and contact the ffmpeg-devel mailing list.\n");
2362 va_end(argument_list);
2365 static AVHWAccel *first_hwaccel = NULL;
2367 void av_register_hwaccel(AVHWAccel *hwaccel)
2369 AVHWAccel **p = &first_hwaccel;
2373 hwaccel->next = NULL;
2376 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
2378 return hwaccel ? hwaccel->next : first_hwaccel;
2381 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
2383 AVHWAccel *hwaccel=NULL;
2385 while((hwaccel= av_hwaccel_next(hwaccel))){
2386 if ( hwaccel->id == codec_id
2387 && hwaccel->pix_fmt == pix_fmt)
2393 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2395 if (ff_lockmgr_cb) {
2396 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
2398 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
2404 if (ff_lockmgr_cb) {
2405 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
2407 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
2413 int avpriv_lock_avformat(void)
2415 if (ff_lockmgr_cb) {
2416 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
2422 int avpriv_unlock_avformat(void)
2424 if (ff_lockmgr_cb) {
2425 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
2431 unsigned int avpriv_toupper4(unsigned int x)
2433 return toupper( x &0xFF)
2434 + (toupper((x>>8 )&0xFF)<<8 )
2435 + (toupper((x>>16)&0xFF)<<16)
2436 + (toupper((x>>24)&0xFF)<<24);
2441 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
2445 ff_init_buffer_info(avctx, f);
2447 return avctx->get_buffer(avctx, f);
2450 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
2452 f->owner->release_buffer(f->owner, f);
2455 void ff_thread_finish_setup(AVCodecContext *avctx)
2459 void ff_thread_report_progress(AVFrame *f, int progress, int field)
2463 void ff_thread_await_progress(AVFrame *f, int progress, int field)
2467 int ff_thread_can_start_frame(AVCodecContext *avctx)
2474 enum AVMediaType avcodec_get_type(enum CodecID codec_id)
2476 AVCodec *c= avcodec_find_decoder(codec_id);
2478 c= avcodec_find_encoder(codec_id);
2482 if (codec_id <= CODEC_ID_NONE)
2483 return AVMEDIA_TYPE_UNKNOWN;
2484 else if (codec_id < CODEC_ID_FIRST_AUDIO)
2485 return AVMEDIA_TYPE_VIDEO;
2486 else if (codec_id < CODEC_ID_FIRST_SUBTITLE)
2487 return AVMEDIA_TYPE_AUDIO;
2488 else if (codec_id < CODEC_ID_FIRST_UNKNOWN)
2489 return AVMEDIA_TYPE_SUBTITLE;
2491 return AVMEDIA_TYPE_UNKNOWN;
2494 int avcodec_is_open(AVCodecContext *s)
2496 return !!s->internal;